V$WLM_PCMETRIC definition in Oracle Database 11.2
V$WLM_PCMETRIC
SELECT
begin_time, -- BEGIN_TIME DATE
end_time, -- END_TIME DATE
intsize_csec, -- INTSIZE_CSEC NUMBER
pc_name_hash, -- PC_NAME_HASH NUMBER
pc_name, -- PC_NAME VARCHAR2(32)
callspersec, -- CALLSPERSEC NUMBER
errcallspersec, -- ERRCALLSPERSEC NUMBER
responsetimepercall, -- RESPONSETIMEPERCALL BINARY_DOUBLE
cpupercall, -- CPUPERCALL BINARY_DOUBLE
cpuwaitpercall, -- CPUWAITPERCALL BINARY_DOUBLE
iopercall, -- IOPERCALL BINARY_DOUBLE
iowaitpercall, -- IOWAITPERCALL BINARY_DOUBLE
gcpercall, -- GCPERCALL BINARY_DOUBLE
gcwaitpercall, -- GCWAITPERCALL BINARY_DOUBLE
niwaitpercall, -- NIWAITPERCALL BINARY_DOUBLE
schwaitpercall -- SCHWAITPERCALL BINARY_DOUBLE
FROM
gv$wlm_pcmetric
WHERE
inst_id = USERENV('INSTANCE')